Karin Dor (; born Kätherose Derr; 22 February 1938 – 6 November 2017) was a German actress. She was famous to international audiences for her role as Bond girl Helga Brandt in the James Bond film You
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf625f0449e5a8447d85ffd56a47239775e60ef219ab18cb8ba248949ce5a44f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44460380-fb1d-405e-b8e1-90a3bf341f00.json and https://artists.proofprofile.net/proofs/artist/44460380-fb1d-405e-b8e1-90a3bf341f00.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).